Compensator mechanism



A. A. SCHWARTZ July 2, 1940.

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July 2, 1940- A. A. SCHWARTZ V COMPENSATOR MECHANISM Fil ed Dec. 23,1938 4 Sheets-Sheet 5 I Mezzr A e/awry Wu QM km W WW AN y 1940- A. A.SCHWARTZ courmnsmon MECHANISM 4 Sheets-Sheet 4 Filed Dec. 23, 1958 I t;f

I I I l l J L Patented July 2, 1 940 PATENT OFFICE 2,206,620coMrENsA'roa MECHANISM Arnold A. Schwartz, Plainfield, N. J., assignorto Wood Newspaper Machinery Corporation, Plainfield, N. J., acorporation of Virginia Application December 23, 1938, Serial No.247,324

7 Claims. (Cl. 271--2.1)

In web printing presses are always used what are commonly known ascompensator rolls. These rolls are so arranged in combination with otherparts, that they engage the web so as to form an adjustable loop in therunning web.

5 In multiple color presses a compensator is required between each twoadjacent impressions, this being the means whereby the colors from eachimpression are precisely deposited in matched relation to the previousimpressions. The registering of margins or colors is always observed bythe pressman at the delivery of the folder. For this reason it has beencommon practice to so arrange the compensator adjusting means that itcould be operated by hand from a position close to the delivery. Thecommon practice has been to lead an adjusting rod from each compensatorto the adjusting position, from which place it then would be possible tooperate each individual compensator by turning a hand wheel attached toeach rod.

As it is quite common that a large number of compensators is required ona press itcan be understood readily that this arrangement in severalways proves unsatisfactory, one of the difliculties being the clutteringup of the space around the folder with a cluster of rods and handwheels. Another bad objection lies in the dimculty of the operatorlocatinginthe cluster the proper hand wheel belonging'to the compensatorwhich needs adjustment.

The objects of this invention are to reduce the above objection; to.reduce to asingle rod and single adjusting wheel the above mentionedcluster of rods and wheels; to make it possible to 5 locate the propercompensator on a color press by simply pushing an adjusting buttonhaving the same color-as the color being printed on the'impressioncouple requiring adjustment; especially 7 to provide a single means bywhich all the different compensators on the press may be operated, andto provide one hand operated rod running to all theeompensators, butmaking the by connection in an electric circuit, energizes a solenoidwhich connects the operating rod to the adjusting screw of the desiredcompensator.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which a Fig. 1is a side view of the compensators and push button station of oneembodiment of this invention;

Fig. 2 is a side" view of the solenoid operating mechanism at eachcompensator therefor on enlarged scale;

Fig. 3 is an end view of the same.

Fig. 4 is a side view of parts shown in Fig. 2, with the clutch openinstead of closed;

Fig. 5 is an enlarged side view of one of theadjusting mechanisms;

Fig. 6 is a diagrammatic view and wiring diagram of a modification inwhich a motor replaces the hand motion for turning the adjusting rod;

Fig. 7 is a similar view in which a ratchet motion is used r'or turningthe adjusting rod, and

Fig; 8 is an end view of the ratchet motion of Fig.7.

This invention is shown, especially in Figs. 1 to 5 inclusive, asapplied to a color press, though the details of the press are not shown.The web supply and course of the web are shown as far as necessary toindicate some of the compensating rolls 33.

An adjusting rod I0 is revolvably supported at each ,compensatorposition I4 and iii. The extreme end of this rod, next to the folder Fisconnected by mitres l3 and a rod i2 to an operating hand wheel ll.Looking especially at Figs. 2 and 3, the rod III is revolvably supportedin bushings I! of which the left end is pressed into a poppet It. Thispoppet is in turn secured to a main support bracket ill by a nut 20. Onthe opposite end of the bushing I1 is loosely fitted a bevel gear 2|which is kept from shifting end wise by a shoulder in the middle ofthe'bushing I! in one direction'and by a collar 22, which is set screwedto the shaft ill, in the other direction.

The bevel gear 2| meshes with a larger bevel gear 23 which is revolvablyfixed on apin 24, this being an integralpart of the poppet l8. A washer35 and screwhead 36 prevent end motion oi the gear 23. The bevelgear 23also meshes with a smaller bevel gear 25. This gear is secured to theupper end of an adjusting screw 26' which is revolvably secured to abracket 21. It is kept from end motion by the gear 25 on the end of ascrew rod and collar 28 which both fasten to the rod on opposite sidesof the bracket -21. The upper end of the bracekt 21 is pivotally mountedon an extension of the poppet l allowing the screw 26 freedom to swingin the direction right and left as looking at Fig. 2.

The screw 26 engages the poppet 29 which is pivotally mounted in a forkin the end of a lever 30, Fig. 1. This lever is fixed to the outside endof a compensator support shaft 3| which extends across thepress. At eachside of the press inside of rails 34 are mounted levers 32, which carryand act as bearings for one of the compensator rolls 33. The shaft 3| isloosely mounted in holes in the rails 34, located at both sides of thepress. On the lower ends of the screws 26 are fastened.

From a study of the above description it will be found that up to now,the hand wheel H can be turned freely in either direction withoutaccomplishing anything but revolving the main adjusting rod Ill.

In the following will now be explained the mechanism which makes itpossible to adjust any desired compensator by simply-pushing one of thebuttons 5|, which is allotted to this specific compensator, and thenturning the hand wheel Looking at Fig. 2 it will be found that the backend of the gear 2| is furnished with a clutch face of V-shaped jaws. Inback of the mitre and slidably fitted to the rod I is located a slidingclutch 31 which, on the side facing the bevel 2|, has a clutch facematching the face on the mitre. This clutch is free to slide far enoughback and away from the gear 2| to disengage its clutch teeth from thoseof the bevel gear. Its furthest motion backwards is limited by a stopcollar 38 which is set-screwed to the rod l6.

The clutch 31, which is connected to the shaft ID by a sliding feather,can be-moved in or out of engagement with the clutch face on the bevelgear by the motion of two levers 39 and 40. These levers pivot around acenter 4|. They always work in unison as one lever, the spring 42 andstop 52, which will later be explained, only acting to keep both leversin normal working position,

At the upper endof the lever 39 is connected 'the toggle link 43 whichconnects the lever 39 to a lever 44. fastens to a solenoid core 45 by apin 46. The lever 44 pivots on a center '50. The solenoid 41 isconnected in an electric circuit with one of a. series of push buttonsadjacent to the hand wheel I A pull spring 48 will, when the solenoid isnot energized, break the toggle formed by the lever 44 and link 43, andthe core 45 will be lifted to the position shown in Fig. 4.

As the toggle is brokenand the spring 46 contracts, it will pull thelever 39 towards the solenoid This will cause the lever 40 to pull awayfrom the solenoid and through rolls 49 in the lower end of the lever4|], which enter a circumferential groove in the clutch 31, willdisengage The other end of the lever 44- cause the toggle formed by thelever 44 and link 43 to lock and in turn push the lever 39 in thedirection away from the solenoid. This in turn will cause the lever 46with the rolls 49 to push the clutch 31 into contact with the clutchface on the gear 2|. By now turning the hand wheel II, the rod |ll'wi1lbe caused to revolve. The clutch 31 will turn the bevel gear 2|, whichin turn will revolve the gear 23 which then will revolve the gear 25 andthe adjusting screw 26.

As the adjusting screw 26 revolves it will cause the arm 30 to move upor down, as required, by

the screw 26 engaging the poppet 29. This lever, being fast to the endof the shaft 3|, will cause the same to turn and thereby shift thecompensator arm 32 and compensator roll 33 to either side, as requiredfor adjustment.

The'only reason for the spring 42 and stop 52 is, that should it everhappen that the tops of the teeth in the clutch 21 and those on the gear2| clash instead of closing, the spring 42 will simply compress untilthe rod ID has been sufficiently revolved to release the teeth and allowthe clutch to close.

0n color presses, the push buttons may, if so desired, be painted in thesame colors as the ink being used in the printing unit to which thecertain button is allotted. By this color system the pressman no longerneeds to remember which unit is printing the color in question, neitherdoes he have to worry about which button belongsto a certain unit. Hesimply pushes the button having the same color which he wishes toregister.

Another way of locating the buttons is, of course, to number the buttonsin accordance with the number of theunit'to which each button isassigned.

In Fig. 6 is'shown an arrangement where the formerly hand operatedadjusting rod I0 is revolved by a reversible motor 60. This motor issecured to the support rail 34 by a bracket 6|. On the end of theadjusting rod I0 is mounted a gear 62 which meshes with a motor pinion63. This gear 62 is secured to the rod I9 by a friction clutch 16 which,by a sliding feather, is kept from revolving on the rod Ill. The reasonfor this clutch is that should, for some reason or another, undue strainbe put on the revolvin of the rod l0, no damage could be done as theclutch would slip and the motor could revolve. The end of the rod I0 isrevolvably supported by a bearing 64 which is secured to the rail 34.Adjacent to the push button station 5| is placed another station 65having two buttons. These buttons are so connected in the electriccircuit to the reversible motor 60, that one button acts to turn themotor in clockwise direction while the other will reverse the motion.When to operate the rod I0 in both directions. In this arrangement, thesame as in Fig. 6, is used a two button station 68in addition to thestation 5|. The solenoids are so connected in the electric circuit by abutton 68, that one of the buttons acts to energize the solenoid 66 andthe other the solenoid 61. When one of the solenoids is energized itwill pull the core 69 or 16 respectively, into '13 will engage with aratchet wheel I4 which is secured to the rod "Land turn the wheel thelength of the stroke.

When the button 68 is released, and the solenoid no longer is energized,a spring I5 will return the pawls to their original positions. As theratchet wheel 14 will move only one fixed distance when pushing a button68, it will be necessary to give the button as many pushes as necessaryto move the compensator the required distance. v

The pawls. are so arranged that, at the neutral position of the stroke,they rise out of contact with the ratchet wheel, and will not againengage with the wheel before being-urged in a forward direction by theaction of the solenoids. The solenoids and ratchet motion are all sup-"ported by a support bracket l8 which is securely fastened to the supportrail 34. By pushing one, or the other, of the buttons 68 the rod l0 maybe turned in the required direction for adjusting purposes.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed. otherwise than asset forth in the claims, but what I claim is:

1. In a printing press, the combination with a plurality of movablecompensators all engaging the web and forming loops therein, of a singlemeans by which all, and any, of said compensators may be adjusted andmeans connecting said single means with each of said compensators.

2. The combination with guide rolls for gum-Y ing a web in a printingplant, and a plurality of compensator rolls engaging and forming loopsin said'web, adjustable tofcompensate for any give and take in the web,of arod extending throughout a series of'said compensators, means forrotating said rod, an adjusting rod for each compensator, independentmeans for connecting each adjusting rod to the first named rod,a pushbutton for each compensator, and meanswhereby each push button controlsthe connection of the first named rod with an individual adjusting roddesigned to cooperate with that push button.

3. In a printing press, the combination with a plurality of movablecompensators all engaging the web and forming loops therein. of arotatable longitudinal rod, a plurality of adjustingrods adjacentthereto, means connecting each of said adjusting rods to a compensatorfor adjusting it,- the said longitudinal rod constituting a single meansfor operating all and any of said adjusting rods and thereby controllingthe compensators. V j e 4. In a printing press, the combination with aplurality of movable compensators all engage ing the web and formingloops therein, of a rod connected for operating a plurality of the com-'pensators, manual means for rotating said rod, a a

series of push buttons, solenoids and electric,

, lever connected with said plunger to be operated thereby, a linkpivoted to the end of, the lever, a second lever pivotally connectedwith the link to form a toggle, a spring connected with the toggle atits joint to normally move the first named lever to a position to drawthe plunger part way out of the solenoid when it is not energized, acompensator adjuster, and a clutch operated by the second lever forconnecting the compensator adjustor with a source of power.

6. In a web-using machine, the combination with a plurality ofcompensators capable of being adjusted to lengthen or shorten a loop ofweb, a single operating means'adapted to oper- *ate in forward orreverse direction, of means for ,selectively connecting any one or moreof the com- (pensators to the single operating means.

'7. In a printing press. the combination with a plurality of movablecompensators all engaging the web and .forming loops therein, a seriesof push buttons, solenoids and electric wires, each running fromonebutton to one of the solenoids, an adjusting screw for adjusting eachcompensator individually, and means connecting each adjusting screw witha solenoid, the solenoids being individually connected to theiradjusting screw for operating solenoid is energized.

ARNOLD A, SCHWARTZ.

them when the respective

